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  1. bubble13

    troostite

    I am doing a hardening heat treatment on high carbon bearing steel.I have a problem of formation of a microstructure called troostite,which I observed it after tempering.How can I avoid this? Is it due to short austenitizing time (I am austenitizing at 850 C for 20 min)? Is there any reference...
  2. bubble13

    hardening heat treatment

    I have 100Cr6 bearing steel.I want to harden it to get a hardness level of around 63HRC.the initial structure is spherodised carbide in the ferrite matrix.the procedure i aim is that to austenitise it to 850C and hold for 20 min at this temperature, quench it in oil and then finally tempering it...
  3. bubble13

    Soft annealing

    Thank you very much yes I mean 'pearlite' but no grain boundary carbides.first of all what I should be doing was intercritical annealing(it should have been partially austenitized before holding and slow cooling) but mistakenly what has been done was subcritical annealing around 680C which gives...
  4. bubble13

    Soft annealing

    Hello, I have some high carbon(1%C) bearing steel,i followed the soft annealing procedure to prepare it for machining.what I expected to get was spherodised cementite in a continous ferrite matrics, unfortunately,when i see the microstructure i get somekind of ferrite so i assumed there is...

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